At the welcome sign in the 'Mercedesstraße' in Ergenzingen, Germany, Baden-Württemberg is a sign mounted to remember the partnership between the two cities Ergenzingen and Gols in Austria (Burgenland).

The sister cities of San Francisco are celebrated in light projections at SFO airport. Overhead projectors display an image of each sister city's flower onto the passenger walkways of boarding areas A and G.